(n.) One who hangs about women; a male flirt.

Casanova Don Juan Lothario Romeo amoroso beau boyfriend caballero cavalier cavaliere servente chaser debauchee esquire fellow flame flirt gallant gay deceiver gay dog gigolo heartbreaker inamorato lady-killer lecher libertine love-maker lover lover-boy man masher necker old man petter philander playboy profligate rake rakehell rip roue rounder seducer sheik skirt chaser squire stud sugar daddy swain swinger walking phallus wanton wolf woman chaser womanizer young man